Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e5c2130d296a0a…

MALICIOUS

PDF

77.0 KB Created: 2021-03-06 04:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fa61a6be5a2d9895940e5e1778a72a66 SHA-1: cb009ba89c27088fdd75f3a80bcbbd64c247e3fd SHA-256: e7e5c2130d296a0ab8485397d45632cdfab1aa8c8cf5f1c4795acf3032276819
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one specifically identified as a malicious link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The presence of multiple links on disposable hosting further supports a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dugedepap.ru/wix?keyword=field+diamond+box+122+miller+park PDF link annotation
    • http://wivaserana.mywebcommunity.org/vobujetumowenazewakewabuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470839/normal_6027a710ede1e.pdfIn PDF document text
    • http://vimobewawulipiz.mypressonline.com/wuvaxerawarabugefuse.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/good_warrior_cat_oc_names.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470221/normal_5fee386d97b24.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/toner_for_brother_mfc-8710dw_printer.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/gurudukozexifefosetom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490524/normal_602a04b346223.pdfIn PDF document text
    • http://kagaromorin.medianewsonline.com/how_to_lie_with_statistics_summary_chapter_by_chapter_examples.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402503/normal_5fd8ebfae1a17.pdfIn PDF document text
    • http://bowuvudofi.scienceontheweb.net/mufoxono.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://50037ee0-0691-4a53-bdc2-b2f8f795cfa6.filesusr.com/ugd/b41a9a_f5d3954e03d249fb81e6c0ddc7d9ebb2.pdf?index=trueIn PDF document text
    • http://makakanow.onlinewebshop.net/how_to_fix_a_maytag_washer_that_will_not_spin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2767dc-2c00-4473-b2b5-4b9dc146447d/neguzutewuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f32fd9d6-5b79-4696-9bcd-90254b5cecc7/ncaa_division_2_womens_basketball_rankings.pdfIn PDF document text
    • https://a1d3e036-d9a1-4be1-9d2f-eedbb581cb22.filesusr.com/ugd/3ce946_996cfbdac17a4d56a6a28067a44a5bcb.pdf?index=trueIn PDF document text
    • http://vugugemo.atwebpages.com/11658554447.pdfIn PDF document text
    • https://5366dd3f-28a3-4342-b8e5-5bed86455aec.filesusr.com/ugd/a92322_890441ae2b1648e9a76c23cbf86b3cfc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdebcbe2-e290-4b90-87bc-731512e77cf7/zajekaf.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE415 5048 bytes
SHA-256: 4e7e85e701330198e3d6941052cbdc46f9952d4e0632d6c95eb743a70e5be011
font_01_sfnt_off0000f51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51A 10444 bytes
SHA-256: 8a0f94082167965a3fe1f11bfd912454d0174f7ae37990f3b36bfa86e447a78c
font_02_sfnt_off000118d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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